Why a capacitor input filter is preferred over choke input filter?

A capacitor input filter is often preferred over a choke input filter due to its smaller size and lighter weight, making it more suitable for compact designs. Additionally, capacitor filters can provide better voltage regulation and faster response to load changes, which is beneficial in many applications. They also typically have a lower cost and simpler implementation compared to choke input filters. However, it's worth noting that the choice depends on specific circuit requirements and performance characteristics.